Children (8 direct children, 27 direct and indirect children):
Eobrachyopidae
(tree size 4)
Perryella
Trimerorhachidae
(tree size 8)
Tupilakosauridae
(tree size 4)
Kourerpetidae
(tree size 2)
Saurerpetontidae
Dvinosauridae
(tree size 1)
Dvinosauroidea